code: def test_formfeed_char():
      source = "class Foo:\n" "\f\n" "    attr = 1234  #: comment\n"
      parser = Parser(source)
      parser.parse()
      assert parser.comments == {("Foo", "attr"): "comment"}
  
imports: from sphinx.pycode.parser import Parser
  from sphinx.util.inspect import signature_from_str
label_desc: Use image node_id 18 for calling a global function with example usage: test_formfeed_char() without return types